发明名称 |
POSITIVE FEEDBACK BIQUAD FILTER |
摘要 |
<p>POSITIVE FEEDBACK BIQUAD FILTER A positive feedback RC active biquadratic filter circuit comprising a passive input RC section and an active amplification output section having at least one operational amplifier. The RC section has two true resistive T-networks and a true capacitive T-network con nected to receive an input signal. The RC section realizes a second order function with a low Q factor. The operational amplifier has a feedback resistive connection from an output thereof to a mid-junction point between each of three capacitances in the capacitive T-network. The capacitive T-network and one of the two resistive Tnetworks are connected to a positive input of the operational amplifier. The other resistive T-network is connected to a negative input of the operational amplifier.</p> |
申请公布号 |
CA1154107(A) |
申请公布日期 |
1983.09.20 |
申请号 |
CA19800358636 |
申请日期 |
1980.08.20 |
申请人 |
CENTRE DE RECHERCHE INDUSTRIELLE DU QUEBEC |
发明人 |
LE DINH, CHON T. |
分类号 |
H03H11/12;(IPC1-7):H03H11/12;H03K3/04;H03F1/38 |
主分类号 |
H03H11/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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